Satellite Image Animation Help Page

Animations are available for all of the Geostationary satellites (MTSAT, GOES-East, GOES-West, Meteosat at 0-degrees longitude and Meteosat at 57-degrees longitude). There is also global composite infrared image available.

MTSAT

The main satellite used for the AOAWS project is MTSAT because it covers the Taiwan area. We receive detailed data from the MTSAT satellite, including all 5 channels, and also calculate cloud top height and channel difference fields from this data.

MTSAT Cloud Top Height

This is the estimated cloud top height, in Flight Level, computed from the Japanese MTSAT satellite IR1 channel and the WRF model data. The height is computed as follows:

- First find the IR brightness temperature for a grid point.

- Then, for that temperature, use the WRF model data to find the appropriate flight level.

Notes:

(a) Generally, for solid cloud decks, the cloud top height will be OVER-estimated, i.e. higher than the true height.

(b) For semi-transparent cloud decks, the cloud top height will be UNDER-estimated, i.e. lower than the true height.

MTSAT Visible Channel

This is a gray-scale image representing the visible channel from the Japanese MTSAT satellite. Generally speaking, white areas represent clouds. The brighter the color, the thicker the cloud layer.

MTSAT Infrared Channels

These are color images representing the IR channels from the Japanese MTSAT satellite. Channels 1, 2 and 4 are IR channels on the MTSAT satellite. The units of the IR channels are the so-called "brightness temperature", which is a measure of the temperature of an object assuming that it radiates as a black body. Clouds are not perfect black bodies, therefore the brightness temperature tends to be lower than the actual cloud top temperature.

MTSAT Water Vapor Channel

This is a color image representing the Water Vapor channel from the Japanese MTSAT satellite. The WV channel is derived from radiation at wavelengths around 6 to 7 microns. The emitted radiation is converted to temperature for display purposes, as with other IR imagery. The data gives information about the moisture in the 300 - 600 hPa layer. Warmer temperatures indicate a dry upper atmosphere, colder temperatures indicate a moister upper atmosphere.

Global Composite

The global composite image is generated at TAMC and then sent to the AOAWS system as an image file. We are only receiving infrared images for the global composite.

Global Composite Infrared

These are color images representing the composited IR channels from all of the geostationary satellites. As with the MTSAT IR channels, these images are presented using brightness temperature.

GOES East

For GOES East, we recieve both visible and infrared images.

GOES East Visible

This is a gray-scale image representing the visible channel from the GOES East satellite. Generally speaking, white areas represent clouds. The brighter the color, the thicker the cloud layer.

GOES East Infrared

This is a color image representing the IR channel from the GOES East satellite. As with the MTSAT IR channels, these images are presented using brightness temperature.

GOES West

For GOES West, we recieve both visible and infrared images.

GOES West Visible

This is a gray-scale image representing the visible channel from the GOES West satellite. Generally speaking, white areas represent clouds. The brighter the color, the thicker the cloud layer.

GOES West Infrared

This is a color image representing the IR channel from the GOES West satellite. As with the MTSAT IR channels, these images are presented using brightness temperature.

Meteosat 0-degree

For the Meteosat 0-degree satellite, we recieve both visible and infrared images.

Meteosat 0-degree Visible

This is a gray-scale image representing the visible channel from the Meteosat 0-degree satellite. Generally speaking, white areas represent clouds. The brighter the color, the thicker the cloud layer.

Meteosat 0-degree Infrared

This is a color image representing the IR channel from the Meteosat 0-degree satellite. As with the MTSAT IR channels, these images are presented using brightness temperature.

Meteosat 57-degree

For the Meteosat 57-degree satellite, we recieve both visible and infrared images.

Meteosat 57-degree Visible

This is a gray-scale image representing the visible channel from the Meteosat 57-degree satellite. Generally speaking, white areas represent clouds. The brighter the color, the thicker the cloud layer.

Meteosat 57-degree Infrared

This is a color image representing the IR channel from the Meteosat 57-degree satellite. As with the MTSAT IR channels, these images are presented using brightness temperature.